Epson DLQ-3500, 742 cps, 360 x 180 DPI, 495 cps, 128 KB, 59 dB, USB 1.1 Epson DLQ-3500. Maximum print speed: 742 cps, Maximum resolution: 360 x 180 DPI, Normal print speed: 495 cps. Buffer size: 128 KB, Sound pressure level (printing): 59 dB. Standard interfaces: USB 1.1. Print head: 24-pin. Dimensions (WxDxH): 26 x 17 x 10.9" (660 x 432 x 276 mm)